[Zope] Re - Making non-aware ZClass CatalogAware

[Jim Fulton]

Anthony Baxter wrote:
> 
> as a data point, I used this with an existing ZClass that was
> also a subclass of Object manager. After the upgrade, things
> like 'objectValues' would no longer work in the ZClass instance
> (they'd return no objects).

This may have been because you added a SimpleItem derived
base class before ObjectManager. SimpleItem defines objectValues
and similar methods to return empty sequences.

Jim

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